Assembly User Manual

ManualsBrandsRockwell Automation ManualsEquipment20P PowerFlex DC Drive - Frame D SCR Module Leg

Publication 20P-IN054A-EN-P

PowerFlex® DC Drive

Frame D SCR Module Leg Assembly

Installation Instructions

What This Kit Includes

• Three SCR module leg assemblies

• Three (for non-regenerative drives) or six (for regenerative drives) gate lead

cable sets

• Static strap

Tools That You Need

• Flathead screwdriver

• Hexalobular screwdrivers

• Torque wrenches

What You Need to Do

To install the SCR module leg assemblies:

❐ Step 1: Remove power from the drive

❐ Step 2: Remove the protective cover and open the control panel

❐ Step 3: Remove the existing SCR module leg assemblies

❐ Step 4: Install the new SCR module leg assemblies

❐ Step 5: Close the control panel, install the protective cover and document

the change

ATTENTION: Only qualified personnel familiar with DC drives

and associated machinery should plan or implement the installation,

start-up and subsequent maintenance of the system. Failure to comply

may result in personal injury and/or equipment damage.

ATTENTION: To avoid an electric shock hazard, ensure that all

power to the drive has been removed before performing the following.

Summary of content (10 pages)

PAGE 1
PowerFlex® DC Drive Frame D SCR Module Leg Assembly Installation Instructions ATTENTION: Only qualified personnel familiar with DC drives and associated machinery should plan or implement the installation, start-up and subsequent maintenance of the system. Failure to comply may result in personal injury and/or equipment damage. ATTENTION: To avoid an electric shock hazard, ensure that all power to the drive has been removed before performing the following.
PAGE 2
Step 1: Remove Power from the Drive ATTENTION: Remove power before making or breaking cable connections. When you remove or insert a cable connector with power applied, an electrical arc may occur. An electrical arc can cause personal injury or property damage by: • sending an erroneous signal to your system’s field devices, causing unintended machine motion • causing an explosion in a hazardous environment Electrical arcing causes excessive wear to contacts on both the module and its mating connector.
PAGE 3
2. Disconnect the DPI cable from the HIM (if present). 3. Insert a flathead screwdriver into the holes in the right side of the protective covers on the drive and turn the latch 90° counter-clockwise. 4. Open the control panel to the left.
PAGE 4
Step 3: Remove the Existing SCR Module Leg Assemblies Important: Note the terminal number on the fuse switch to which the signal wires are connected for proper re-installation. Note terminal numbers on fuses for wire connections 4 2 1 1. Remove the signal wires from the fuse switch connectors and secure the wires in a position above the input terminals. 2. Loosen the lower bolt and washer that secures the bottom of each leg fuse to the SCR module leg input terminal. 3.
PAGE 5
Important: Mark all connections and wires before removal to avoid incorrect wiring during reassembly. 4. Disconnect the gate lead wires from the connectors mounted at the top of each SCR module leg assembly. Note: there are three connectors at the front for non-regenerative drives. There are six connectors, three in front and three behind, for regenerative drives. 5. Disconnect the wires for the bimetal thermostat from the connector mounted on the middle of the left SCR module leg assembly. 6.
PAGE 6
7. Remove the four bolts and washers that secure each SCR module leg assembly output terminal to a DC output bus bar (C and D) at the bottom of the drive. Important: Once the connecting bolts and washers are removed, the “C” shaped bus bar between the middle and right SCR module leg assembly can be removed, allowing access to the rear terminals.
PAGE 7
Important: Prior to removing the SCR assemblies, ensure that the area around the drive is clear of equipment. Only lift the assemblies using the handles provided. 8. Loosen the six hexalobular screws that secure the SCR module leg assembly to the back wall of the drive chassis. 9. Using the two handles, lift the SCR assembly up and off the mounting screws, and lift the assembly up and forward so that the output terminals clear the holes in the bottom of the drive frame. 10.
PAGE 8
11. If you are reusing the bimetal thermostat mounted on the left SCR module leg assembly, disconnect the wires from the connector mounted on the middle, left-side of the assembly. 12. Remove the two hexalobular screws that secure the thermostat to the heat sink and remove the thermostat.
PAGE 9
Step 5: Close the Control Panel, Install the Protective Cover and Document the Change 1. Close the control panel, replace the DPI cable (if necessary), and install the protective cover in the reverse order of removal as detailed in Step 2: Remove the Protective Cover and Open the Control Panel on page 2. Related Documentation Allen-Bradley publications are available on the internet at www.rockwellautomation.com/literature. 2.
PAGE 10
1S7A53 www.rockwellautomation.com Power, Control and Information Solutions Americas: Rockwell Automation, 1201 South Second Street, Milwaukee, WI 53204-2496 USA, Tel: (1) 414.382.2000, Fax: (1) 414.382.